Fix several clang-tidiy issues

src/BleClient.h

@@ -1,5 +1,5 @@
-#ifndef _SENSIRION_UPT_BLE_AUTO_DETECTION_BLECLIENT_H
-#define _SENSIRION_UPT_BLE_AUTO_DETECTION_BLECLIENT_H
+#ifndef SENSIRION_UPT_BLE_AUTO_DETECTION_BLE_CLIENT_H
+#define SENSIRION_UPT_BLE_AUTO_DETECTION_BLE_CLIENT_H
 
 #include "Arduino.h"
 #include "BleClientCallback.h"
@@ -13,4 +13,4 @@ class BleClient {
     virtual void keepAlive() = 0;
 };
 
-#endif /* _SENSIRION_UPT_BLE_AUTO_DETECTION_BLECLIENT_H */
+#endif /* SENSIRION_UPT_BLE_AUTO_DETECTION_BLE_CLIENT_H */

src/BleClientCallback.h

@@ -1,13 +1,12 @@
-#ifndef _SENSIRION_UPT_BLE_AUTO_DETECTION_BLECLIENTCALLBACK_H
-#define _SENSIRION_UPT_BLE_AUTO_DETECTION_BLECLIENTCALLBACK_H
+#ifndef SENSIRION_UPT_BLE_AUTO_DETECTION_BLE_CLIENT_CALLBACK_H
+#define SENSIRION_UPT_BLE_AUTO_DETECTION_BLE_CLIENT_CALLBACK_H
 
 class BleClientCallback {
   public:
-    virtual ~BleClientCallback() {
-    }
+    virtual ~BleClientCallback() = default;
 
-    virtual void onAdvertisementReceived(std::string address, std::string name,
-                                         std::string data);
+    virtual void onAdvertisementReceived(uint64_t address, std::string name,
+                                         std::string data) = 0;
 };
 
-#endif /* _SENSIRION_UPT_BLE_AUTO_DETECTION_BLECLIENTCALLBACK_H */
+#endif /* SENSIRION_UPT_BLE_AUTO_DETECTION_BLE_CLIENT_CALLBACK_H */

src/NimBleClient.cpp

@@ -1,40 +1,33 @@
 #include "NimBleClient.h"
 
-void NimBleClient::begin(BleClientCallback* callback) {
-    _callback = callback;
-    setupAndStartBleScans();
-};
-
-void NimBleClient::keepAlive() {
-    // If an error occurs that stops the scan, it will be restarted here.
-    if (_bleScan->isScanning() == false) {
-        // Start scan with: duration = 0 seconds(forever), no scan end callback,
-        // not a continuation of a previous scan.
-        _bleScan->start(0, nullptr, false);
-    }
-}
-
-void NimBleClient::setupAndStartBleScans() {
+NimBleClient::NimBleClient() : _callback(nullptr) {
     // CONFIG_BTDM_SCAN_DUPL_TYPE_DATA_DEVICE (2)
     // Filter by address and data, advertisements from the same address will be
     // reported only once, except if the data in the advertisement has changed,
     // then it will be reported again.
     NimBLEDevice::setScanFilterMode(CONFIG_BTDM_SCAN_DUPL_TYPE_DATA_DEVICE);
     NimBLEDevice::setScanDuplicateCacheSize(200);
     NimBLEDevice::init("");
-
-    // create new scan
     _bleScan = NimBLEDevice::getScan();
-    // Activate callback on advertisement update
-    _bleScan->setAdvertisedDeviceCallbacks(this, true);
-    // Set active scanning, this will get more data from the advertiser.
-    _bleScan->setActiveScan(true);
-    // How often the scan occurs / switches channels; in milliseconds,
-    _bleScan->setInterval(97);
-    // How long to scan during the interval; in milliseconds.
-    _bleScan->setWindow(37);
-    // do not store the scan results, use callback only.
-    _bleScan->setMaxResults(0);
+    setupBleScans();
+}
+
+NimBleClient::~NimBleClient() {
+    _bleScan->stop();
+}
+
+void NimBleClient::begin(BleClientCallback* callback) {
+    _callback = callback;
+    startBleScans();
+}
+
+void NimBleClient::keepAlive() {
+    // If an error occurs that stops the scan, it will be restarted here.
+    if (!_bleScan->isScanning()) {
+        // Start scan with: duration = 0 seconds(forever), no scan end callback,
+        // not a continuation of a previous scan.
+        startBleScans();
+    }
 }
 
 void NimBleClient::onResult(NimBLEAdvertisedDevice* advertisedDevice) {
@@ -43,11 +36,12 @@ void NimBleClient::onResult(NimBLEAdvertisedDevice* advertisedDevice) {
     }
 
     // MAC address contains 6 bytes of MAC address (in reversed order)
-    // (Note: advertisedDevice->getAddress().toString() seems broken)
     const uint8_t* bleMACAddress = advertisedDevice->getAddress().getNative();
-    std::string address;
-    for (int i = 5; i >= 0; i--) {
-        address.push_back(bleMACAddress[i]);
+    uint64_t address = 0;
+    size_t address_size = 6;
+    // reverse MAC address and store it as 64-bit unsigned int
+    for (int ix = 0; ix < address_size; ix++) {
+        address = (address << 8) | bleMACAddress[address_size - 1 - ix];
     }
 
     std::string name = advertisedDevice->haveName()
@@ -56,4 +50,23 @@ void NimBleClient::onResult(NimBLEAdvertisedDevice* advertisedDevice) {
     std::string manufacturerData = advertisedDevice->getManufacturerData();
 
     _callback->onAdvertisementReceived(address, name, manufacturerData);
-};
+}
+
+void NimBleClient::setupBleScans() {
+    // Activate callback on advertisement update
+    _bleScan->setAdvertisedDeviceCallbacks(this, true);
+    // Set active scanning, this will get more data from the advertiser.
+    _bleScan->setActiveScan(true);
+    // How often the scan occurs / switches channels; in milliseconds,
+    _bleScan->setInterval(97);
+    // How long to scan during the interval; in milliseconds.
+    _bleScan->setWindow(37);
+    // do not store the scan results, use callback only.
+    _bleScan->setMaxResults(0);
+}
+
+void NimBleClient::startBleScans() {
+    // Start scan with: duration = 0 seconds(forever), no scan end callback,
+    // not a continuation of a previous scan.
+    _bleScan->start(0, nullptr, false);
+}

src/NimBleClient.h

@@ -1,20 +1,24 @@
-#ifndef _SENSIRION_UPT_BLE_AUTO_DETECTION_NIMBLECLIENT_H
-#define _SENSIRION_UPT_BLE_AUTO_DETECTION_NIMBLECLIENT_H
+#ifndef SENSIRION_UPT_BLE_AUTO_DETECTION_NIMBLE_CLIENT_H
+#define SENSIRION_UPT_BLE_AUTO_DETECTION_NIMBLE_CLIENT_H
 
 #include "BleClient.h"
 #include "NimBLEDevice.h"
 
-class NimBleClient: public BleClient, public NimBLEAdvertisedDeviceCallbacks {
+class __attribute__((unused)) NimBleClient
+    : public BleClient,
+      public NimBLEAdvertisedDeviceCallbacks {
   public:
-    NimBleClient() : _bleScan(nullptr), _callback(nullptr){};
+    NimBleClient();
+    ~NimBleClient();
     void begin(BleClientCallback* callback) override;
     void keepAlive() override;
 
   private:
     NimBLEScan* _bleScan;
     BleClientCallback* _callback;
-    void setupAndStartBleScans();
-    void onResult(NimBLEAdvertisedDevice* advertisedDevice);
+    void setupBleScans();
+    void startBleScans();
+    void onResult(NimBLEAdvertisedDevice* advertisedDevice) override;
 };
 
-#endif /* _SENSIRION_UPT_BLE_AUTO_DETECTION_NIMBLECLIENT_H */
+#endif /* SENSIRION_UPT_BLE_AUTO_DETECTION_NIMBLE_CLIENT_H */

src/Sensirion_upt_ble_auto_detection.cpp

@@ -1,39 +1,36 @@
 #include "Sensirion_upt_ble_auto_detection.h"
+#include "Arduino.h"
 #include "NimBleClient.h"
 
 const int COMPANY_ID_FILTER = 54534;
 
 void SensiScan::begin() {
     _bleClient = new NimBleClient();
     _bleClient->begin(this);
-    _bleClient->keepAlive();
 }
 
-void SensiScan::getScanResults(
+__attribute__((unused)) void SensiScan::getScanResults(
     std::map<uint16_t, std::vector<Measurement>>& scanResults) {
     for (const auto& cachedSample : _sampleCache) {
-        scanResults[cachedSample.first] = _sampleCache[cachedSample.first];
+        scanResults[cachedSample.first] = cachedSample.second;
     }
     _sampleCache.clear();
 }
 
-void SensiScan::keepAlive() {
+__attribute__((unused)) void SensiScan::keepAlive() {
     _bleClient->keepAlive();
 }
 
-void SensiScan::onAdvertisementReceived(const std::string address,
-                                        std::string name, std::string data) {
+void SensiScan::onAdvertisementReceived(uint64_t address, std::string name,
+                                        std::string data) {
     uint16_t companyId = (uint16_t)data[0] << 8 | (uint8_t)data[1];
     if (companyId != COMPANY_ID_FILTER) {
         return;
     }
 
-    // Get MAC address as uint64_t
-    uint64_t deviceID = squashMACAddress(address);
-
     // Build MetaData
     MetaData metaData;
-    metaData.deviceID = deviceID;
+    metaData.deviceID = address;
     metaData.deviceType.bleGadgetType =
         bleGadgetTypeFromCompleteLocalName(name.c_str());
     metaData.platform = DevicePlatform::BLE;
@@ -45,24 +42,10 @@ void SensiScan::onAdvertisementReceived(const std::string address,
         return;
     }
 
-    // Last two digits of MAC addr. suffice to uniquely ID a BLE device
+    // Last two digits of MAC addr. Suffice to uniquely ID a BLE device
     _sampleCache[getDeviceId(data)] = samples;
 }
 
-/**
- * @brief squash std::string address to a uint64_t
- * @note MAC address is comprised of 6 bytes
- */
-uint64_t SensiScan::squashMACAddress(const std::string& macAddressString) {
-
-    uint64_t deviceID = macAddressString[0];
-    for (size_t i = 1; i < 6; i++) {
-        deviceID = (deviceID << 8) | macAddressString[i];
-    }
-
-    return deviceID;
-}
-
 /**
  * @brief last two digits of MAC address uniquely define a device
  */
@@ -71,8 +54,6 @@ uint16_t SensiScan::getDeviceId(const std::string& data) {
     return deviceId;
 }
 
-extern std::map<DataType, SampleConfig> sampleConfigSelector;
-
 /**
  * @brief decode chunk of Advertisement containing encoded samples
  *
@@ -81,7 +62,7 @@ extern std::map<DataType, SampleConfig> sampleConfigSelector;
  */
 uint8_t SensiScan::decodeData(const MetaData& metaData, const std::string& data,
                               std::vector<Measurement>& samples) {
-    uint8_t sampleType = static_cast<uint8_t>(data[3]);
+    auto sampleType = static_cast<uint8_t>(data[3]);
 
     DataType dataType = getDataTypeFromSampleType(sampleType);
     SampleConfig sampleConfig = sampleConfigSelector[dataType];

src/Sensirion_upt_ble_auto_detection.h

@@ -1,5 +1,5 @@
-#ifndef _SENSIRION_UPT_BLE_AUTO_DETECTION_H_
-#define _SENSIRION_UPT_BLE_AUTO_DETECTION_H_
+#ifndef SENSIRION_UPT_BLE_AUTO_DETECTION_H
+#define SENSIRION_UPT_BLE_AUTO_DETECTION_H
 
 #include "Arduino.h"
 #include "BleClient.h"
@@ -8,24 +8,23 @@
 #include <string>
 #include <vector>
 
-class SensiScan: public BleClientCallback {
+class __attribute__((unused)) SensiScan: public BleClientCallback {
   public:
-    explicit SensiScan() : _bleClient(nullptr){};
+    explicit SensiScan() : _bleClient(nullptr) {};
 
     void begin();
-    void
+    __attribute__((unused)) void
     getScanResults(std::map<uint16_t, std::vector<Measurement>>& scanResults);
-    void keepAlive();
+    __attribute__((unused)) void keepAlive();
 
   private:
     BleClient* _bleClient;
     std::map<uint16_t, std::vector<Measurement>> _sampleCache;
-    void onAdvertisementReceived(std::string address, std::string name,
+    void onAdvertisementReceived(uint64_t address, std::string name,
                                  std::string data) override;
-    uint64_t squashMACAddress(const std::string& macAddressString);
-    uint16_t getDeviceId(const std::string& data);
-    uint8_t decodeData(const MetaData& metaData, const std::string& data,
-                       std::vector<Measurement>& samples);
+    static uint16_t getDeviceId(const std::string& data);
+    static uint8_t decodeData(const MetaData& metaData, const std::string& data,
+                              std::vector<Measurement>& samples);
 };
 
-#endif /* _SENSIRION_UPT_BLE_AUTO_DETECTION_H_ */
+#endif /* SENSIRION_UPT_BLE_AUTO_DETECTION_H */